Congratulations on Another Breakthrough in the Southern Heavenly Gate Plan

I've proofread the conversation, preserving the format as requested. Here are the changes and corrections I made:

A few minutes later, Tang Rui climbed down the ladder.

The teaching staff holding onto the ladder at the side looked distressed.

This guy was brash and unpolished.

He wrapped the corners of the ladder with his handkerchief, afraid that the ladder would scratch the surface coating.

But this pilot was good.

His big feet stepped on the edge of the cockpit and even rubbed against it twice when he came down.

"Look at you. How old are you? Can't you be more mature in doing things?" Professor Yu said helplessly after Tang Rui came down.

"Professor, don't worry. My flying skills are absolutely fine. Not to mention, with his own fighter jet, it was convenient to go anywhere," Tang Rui said indifferently, completely not taking it seriously.

The others couldn't understand.

Even he still didn't understand it himself.